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See every field in a PDF form

Find out why you cannot type somewhere: list every field with its name, type, page, value and flags, and check for an XFA layer.

Diagnostic · runs in this tab · free
Form field inspectorRead in this tab, never run
Drop a PDF anywhere on this pageThe instant X-ray reads the raw bytes; the full inspector then parses every object in a Web Worker. Nothing is uploaded or executed.
What you’ll see
  • Every field: name, type, page, current value
  • Read-only, required and signature fields
  • AcroForm, XFA and encryption, explained
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Reading the results

Read-only fields cannot be typed in by design. On official forms many are meant to be: barcode fields, fields copied automatically from another field (like an ID number repeated on every page), and signature boxes that must be signed in ink.

XFA means the form has a second, XML-based layer. Adobe Acrobat and Reader show that layer; most other viewers ignore it and show the AcroForm fields. Pure XFA forms (no AcroForm fields at all) show “Please wait…” in non-Adobe viewers.

Encrypted forms with an empty password open normally but restrict editing; the inspector reads them anyway.

Steps

  1. Drop the form.
  2. Read the summary: AcroForm, XFA, encryption.
  3. Filter the field list (read-only, required, empty).
  4. Fix: fill it, or use the form’s official page.

Limits, stated plainly

  • Field scripts (calculations, validation) are listed as present, not run.

Engine: pdf-lib in a Web Worker. Your file is not uploaded; check it yourself.